2-ethyl-hexyl, n-octadecyl tetrachlorophthalamidate and insecticidal compositions containing the same



Patented Nov. 16, 1943 ums STATES I. PATEN per l-cs f I I cmm-nm. f;msn I r cnpoaorn'rmsmna'rs AND Issac-i TICIDAL coMrosrrroNs con'rnmnvo I run SAME Mark L. Hill, Bethel Township, Delaware Count!- and Herschel G. Smith, Wallingford, Pl. as-

signors to Gulf Oil Corporation, Pittsburgh, Pa., a corporation of Pennsylvania Application February 3, 1848, Serial No. 8,01 8

8 Claims. (Cl. 187-60) K No Drawing.

Y of this product dissolved in major proportions of mineral base oils for the purpose of providing sprays and livestock dips. Toxicants are also frequently used with inert powders which may be dusted onto areas inhabited by insects, while further forms of application are found in coating compositions containing plastics or waxes and one or more insecticidal ingredients. Many toxicants are also used in the form of aqueous solutions, dispersions and emulsions which may be sprayed on insects and their habitat.

Accordingly, an object accomplished by this invention is the provision of a novel insecticidal toxicant.

A further object accomplished by this invention is the provision of a novel insecticidal toxicant which may be incorporated with various other insecticidal ingredients known to the art.

A still further object accomplished by this invention is the provision of a new chemical compound which exhibits as one of its useful properties a toxicity advantageously adapting it for insecticidal applications.

Other objects appear hereinafter.

The toxicant of the present invention is 2- ethyl-hexyl, N-octadecyl tetrachlorophthalamidate having the following structural formula:

CgHs

The above compound was prepared by reacting 304 grams of tetrachlorophthalic acid with 135 grams of monooctadecylamine and 130 grams of 2-ethyl-hexanol in 560grams of a petroleum solvent within the kerosene boiling range. The mixture was refluxed and the water of formation removed to complete the reaction, the period of time required being about four hours. The final solution was found to contain 50 per cent by weight of the reaction product and may be used without further treatment as an insecticidal toxicant ingredient. However, the product of the reaction, which is a white crystalline material having a melting point of 206 R, may first be separated out andthen used to compound insecticides. Relatively small amounts a petroleum solvent are useful as insecticide compositions.

The use of Z-ethyI-hexyl, N-octadecyl tetrachlorophthalamidate as an insecticidal toxicant is illustrated by the specific examples in the table. The fly killing-test, Gulf Method 228, is

set mm in detail in u. s. Patent 2,421,223.

' Table Insecticide Makeup: Per cent by Weight Z-ethyl-hexyl, N-ootadecyl tetrachlorophthalsm- Solution of mg. pyrethrins per 100 co. in a hydrocarbon solven Petroleum Solvent 99.0

Ins

Toggle:- ure: F Re ive Humidity: Per cent... Average Tests: 1 Down 10 Min: Per cent Time of Knockdown: Bee Killed, 24 Hr.: Per cent Difl'erence between the kill 0! the sample and that 0! the Official Test Insecticide (NAIDM) l 8 sea sass National Association oi Insecticide and Dlsiniectant Manniw turers, Inc., New York, N. Y.

' While the toxicant of the present invention may advantageously be used with a petroleum base solvent, such as naphtha, kerosene, and heavier cuts for livestock dips, this invention is not to belimited thereto. For example, 2-ethylhexyl, N-octadecyl tetrachlorophthalamidate may be compounded with or without other toxicants and fungicides and with the diluents and.

carriers commonly used in the art. These materials classified herein as carriers and referred to in the appended claims by the term carrier include aliphatic and aromatic hydrocarbon solvents, active and inert solid diluents, sticking and spreading agents, coating materials containing composition. These agents may include the alkali metal salts of sultonated oils, sodium lauryl sul- Iate, salts oi suli'onated aromatics, esters or fatty acids, soaps. alkanolamines, and the like.

While only relatively small amounts of Z-ethylhexyl, N-octadecyl tetrachlorophthaiamidate, such as 1mm 0.1 to 2.0 per cent by weight, are necessary to impart substantial toxicity to insecticldal compositions containin: the same. larger proportions up to 10.0 per cent by weiaht may be used where desirable.

What we claim is:

1. The compound, fl-ethyl-hexyl. N-octadecyl tetrachlorophthalamidate.

2. An insecticidal composition comprising a toxic amount of il-ethyl-henl. N-octadecyl tetrachlorophthalamidate.

8. An insecticidal composition comprising a No references cited. 

